Jose Sheena, Purushothaman P, Madhavan Manu, Akash S, Bharathi S, Dhinakaran A, Kumar T T Ajith, Lal K K
ICAR-National Bureau of Fish Genetic Resources, Canal Ring Road, P.O. Dilkusha, Lucknow-226 002, UP, India..
Zootaxa. 2020 Mar 24;4755(2):zootaxa.4755.2.9. doi: 10.11646/zootaxa.4755.2.9.
The present study reports the new records of two species of the hippolytid shrimp genus Lysmata Risso, 1816 in the water off Lakshadweep Islands, India from the Arabian Sea, viz. Lysmata hochi Baeza Anker, 2008 and Lysmata amboinensis (De Man, 1888) with more taxonomic information. Moreover, L. hochi is the first distributional report from the Indian Ocean. It is morphologically similar to L. kuekenthali and differences are discussed. Colour pattern and morphological trait of L. amboinensis are very close to L. grabhami which also differs in the presence of anti-penultimate segment of 3rd maxilliped more than 2.0 times as long as penultimate segment and stylocerite does not reaching the distal end of the cornea. These specimens were obtained at a depth of 0.5-2 m from the intertidal region of Agatti Island. Additionally, we estimated pairwise genetic distances for these two species and congeneric species using cytochrome oxidase subunit I gene sequences where interspecific distances ranged from 11-25.8 %.
本研究报告了1816年里斯索(Risso)描述的叶虾属(Lysmata)两种叶虾在印度拉克沙群岛附近阿拉伯海水域的新记录,即2008年的霍氏叶虾(Lysmata hochi)和安汶叶虾(Lysmata amboinensis)(德曼,1888年),并提供了更多分类信息。此外,霍氏叶虾是来自印度洋的首次分布报告。它在形态上与库氏叶虾(L. kuekenthali)相似,并对两者的差异进行了讨论。安汶叶虾的颜色模式和形态特征与格拉布氏叶虾(L. grabhami)非常接近,后者的第三颚足倒数第二节比倒数第三节长2.0倍以上,且触角柄节未到达角膜远端,这也是两者的不同之处。这些标本采自阿加蒂岛潮间带0.5 - 2米深处。此外,我们使用细胞色素氧化酶亚基I基因序列估计了这两个物种以及同属物种之间的成对遗传距离,种间距离范围为11 - 25.8%。